(3aJGhi QShd Gddg Udi Gddg Ydjg hSde (B/s - (3GdLejdj, GdSjO EHQGgjes ((3HjQhJ (B:s (3OGQ GdcJGH GdYQHj,s, 1985)
Keywords: (3Gdabg GdESdGejs; (3aJGhi GdQShd Udi Gddg Ydjg hSdes